Hello, I'm new-ish to apex and am trying to copy over an existing Class we have in our current org. Can someone help me with this one?

Error : Error: Compile Error: Method does not exist or incorrect signature: void assembleFinAcctName(FinServ__FinancialAccount__c, Map<String,Beneficiary__c>) from the type ReportAsset at line 51 column 10

public ReportAsset(FinServ__FinancialAccount__c a,Map<String,String> rtMap,Map<String,String> bfNoteMap,Map<String,Beneficiary__c> primaryBMap,Account household, Boolean isRMD) {
    initialize();
    
        this.itemDate = a.As_of_Date__c;
        if (this.itemDate == NULL) {
          this.itemDate = date.today();
        }
        this.isRMD = isRMD;